Analysis of radiation from a line source in a grounded dielectric slab covered by a metal strip grating

A metal strip grating over a grounded dielectric slab (MSG-GDS) is a well studied canonical structure with many applications to antennas. Although many studies on the dispersion characteristics of the MSG-GDS can be found in the literature, not much work can be found on the excitation of this structure by a localized source. It is therefore our aim to investigate the later. To this end we solve the 2D problem with a line source excitation.